I'd like to know if there is a way to limit the number of participants in a group activity (SharePlay). Looking through the API, I could not find anything regarding limiting or requiring the number of participants.
Can I limit the number of participants in a Group Activity?
Unfortunately, there is currently no way to limit the number of participants, as everyone on the FaceTime call is eligible to join into the SharePlay activity - and up to 33 people can be in a FaceTime call. If you will find this useful, please file it in feedback assistant so we can consider your use case!